/**
 * Created by gl on 2017/4/15.
 */
public class FangCheng {
    public static void main(String[] args){
        for(int x=0;x<=80;x++){
            int y=80-x;
            int m=130-x;
            int n=80-y;
            if(m-n==60){
                System.out.println("x="+x );
                System.out.println("y="+y );
                System.out.println("m="+m );
                System.out.println( "n="+n);
            }

        }
    }
}
